Robot cleaner



FIG. 1 is the front perspective view of a robot cleaner showing my newdesign;

FIG. 2 is the front view thereof;

FIG. 3 is the rear view thereof;

FIG. 4 is the left-side view thereof;

FIG. 5 is the right-side view thereof;

FIG. 6 is the top-side plan view thereof; and,

FIG. 7 is the bottom-side plan view thereof.

CLAIM The ornamental design for a robot cleaner, as shown and described.